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. 2024 May 22;10(11):e31086. doi: 10.1016/j.heliyon.2024.e31086

Table 3.

Gasses emissions, Hl, and risk rating at site locations.

ID/No. Location Name CO SO2 NO2 HCN NH3 PM10 HI Risk
Rating
Work Environment EEL Limit (PPM) 25 3 2 4.7 25 3 mg/m3 >1 High
<1 Low
Low(L)
Medium(M)
High(H)
Ambient Environment EEL Limit(μg/m3) 400 350 NIL NIL NIL 150
Ambient Environment (Time exposure 24 h)
#1 Main Road 0.27 0.1 0.1 0 0.1 85 0.0015 L
#3 Camp Area 0.1 0 0 0 0 93 0.0003 L
Work Environment (Time Exposure 8 Hrs.)
#2 Security Office 0.24 0 0 0 0 1.26 0.01 L
#4 Batch Plant Area 0.1 0.1 0.6 0 0 0.58 0.34 L
#5 LV Workshop 0.72 0.1 0.4 0 2.75 0.77 0.37 L
#6 Warehouse 0.36 0 0 1 0 0.85 0.23 L
#7 Clinic 0.1 0 0 0 0 0.09 0.00 L
#8 New Admin Office 0.5 0 0 0 0 0.08 0.02 L
#9 Mining Check Point 0.1 0 0.1 0 1 0.98 0.09 L
#10 Drill Pattern 1.2 0 0.1 0 0 1.51 0.10 H
#11 Digging Face 0.8 0 0.1 0 0 0.59 0.08 L
#12 Blast Pattern 1.3 0 0 0 1 0.39 0.09 L
#13 Room Pad 0.35 0 0 0 0 0.25 0.01 L
#14 Waste Dump-Grade Control Area 0.92 0 0 0 0 0.37 0.04 L
#15 Waste Dump-Pit Containers Offices 0.12 0 0 0 0 0.47 0 L
#16 Underground Area 1(740 Access) 6 0.37 1.9 7 23.67 4.6 3.75 H
#17 Underground Area 2 (Tagboard 770) 3.91 0.23 1.8 6 15.7 3.8 3.04 H
#18 Underground Area 3 2.8 0.12 1.6 5 7 3.6 2.30 H
#19 Mobile Maintenance Workshop 2.9 0.1 0 0 0 0.4 0.15 L
#20 Area In front of the power plant 0 0.1 0.1 0 4.67 0.37 0.27 L
#21 Power Generators House 2.9 0.1 0.1 0 10 0.99 0.60 L
#22 Power station stacks Area 2.8 0.1 0.1 0 4 0.99 0.36 H
#23 Power Plant Office 0.1 0 0 0 0 0.89 0.00 L
#24 Inside Laboratory (Sample Preparation) 0.5 0.1 0.1 0 1 4.2 0.14 H
#25 Outside laboratory 0.6 0 0.1 0 1 1.98 0.11 L
#26 Carbon Regeneration area 2.2 0.1 0.1 0 1 0.45 0.21 L
#27 Air Compressor Area 0.1 0.1 0 0 2 0.86 0.12 H
#28 Plant Workshops 2.1 0.1 0.3 0 0 0.99 0.27 L
#29 Mills Area 1.5 0.1 0.5 0 2 0.37 0.42 H
#30 CN Area 0.1 0 0.3 1 3 0.20 0.49 L
#31 Floatation Tank Area 1.37 0 0.9 4 1 0.27 1.40 L
#32 Gold Room 0.47 0.1 0.9 0.1 2.8 0.99 0.64 L
#33 Carbon Leaching Tank Area (1) 2.1 0.1 1.9 5.5 15.5 0.12 2.86 H
#34 Carbon Leaching Tank Area (2) 3.9 0.1 0.7 5.4 14 0.18 2.25 H
#35 At Regrind Area 2.1 0.1 0.5 0 4 0.89 0.53 L
#36 At Lime Area 0.1 0 0.1 0 1 1.10 0.09 M
#37 Process Plant Control 2.1 0.1 0.2 0 1 0.20 0.26 L
#38 Crusher Control Room 0.1 0.1 0.2 0 0 0.25 0.14 L
#39 Process & Mining Office 0.1 0 0.1 0 1 0.35 0.09 L